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/**
******************************************************************************
* @file lib_flash.c
* @author Application Team
* @version V4.3.0
* @date 2018-09-27
* @brief FLASH library.
******************************************************************************
* @attention
*
******************************************************************************
*/
#include "lib_flash.h"
#include "lib_clk.h"
/* FLASH Keys */
#define FLASH_PASS_KEY 0x55AAAA55
#define FLASH_SERASE_KEY 0xAA5555AA
#define FLASH_CERASE_KEY 0xAA5555AA
#define FLASH_DSTB_KEY 0xAA5555AA
#define FLASH_MODE_MASK 0x1F3
/**
* @brief FLASH mode initialization.
* @param CSMode:
FLASH_CSMODE_DISABLE
FLASH_CSMODE_ALWAYSON
FLASH_CSMODE_TIM2OF
FLASH_CSMODE_RTC
* @retval None
*/
void FLASH_Init(uint32_t CSMode)
{
uint32_t tmp;
/* Check parameters */
assert_parameters(IS_FLASH_CSMODE(CSMode));
tmp = FLASH->CTRL;
tmp &= ~FLASH_MODE_MASK;
tmp |= CSMode;
FLASH->CTRL = tmp;
}
/**
* @brief Configure FLASH interrupt.
* @param IntMask:
FLASH_INT_CS
NewState:
ENABLE
DISABLE
* @retval None
*/
void FLASH_INTConfig(uint32_t IntMask, uint32_t NewState)
{
uint32_t tmp;
/* Check parameters */
assert_parameters(IS_FLASH_INT(IntMask));
assert_parameters(IS_FUNCTIONAL_STATE(NewState));
tmp = FLASH->CTRL;
tmp &= ~IntMask;
if (NewState == ENABLE)
{
tmp |= IntMask;
}
FLASH->CTRL = tmp;
}
/**
* @brief Init FLASH 1USCYCLE.
* @param None
* @retval None
*/
void FLASH_CycleInit(void)
{
uint32_t hclk;
hclk = CLK_GetHCLKFreq();
if (hclk > 1000000)
MISC2->FLASHWC = (hclk/1000000)<<8;
else
MISC2->FLASHWC = 0;
}
/**
* @brief Erase FLASH sector.
* @param SectorAddr: sector address.
* @retval None
*/
void FLASH_SectorErase(uint32_t SectorAddr)
{
/* Check parameters */
assert_parameters(IS_FLASH_ADDRESS(SectorAddr));
/* Unlock flash */
FLASH->PASS = FLASH_PASS_KEY;
FLASH->PGADDR = SectorAddr;
FLASH->SERASE = FLASH_SERASE_KEY;
while (FLASH->SERASE != 0);
/* Lock flash */
FLASH->PASS = 0;
}
/**
* @brief FLASH word program.
* @param Addr: program start address
WordBuffer: word's buffer pointer to write
Length: The length of WordBuffer
* @retval None
*/
void FLASH_ProgramWord(uint32_t Addr, uint32_t *WordBuffer, uint32_t Length)
{
uint32_t i;
/* Check parameters */
assert_parameters(IS_FLASH_ADRRW(Addr));
/* Unlock flash */
FLASH->PASS = FLASH_PASS_KEY;
FLASH->PGADDR = Addr;
for (i=0; i<Length; i++)
{
FLASH->PGDATA = *(WordBuffer++);
}
while (FLASH->STS != 1);
/* Lock flash */
FLASH->PASS = 0;
}
/**
* @brief FLASH half-word progarm.
* @param Addr: program start address
HWordBuffer: half-word's buffer pointer to write
Length: The length of HWordBuffer
* @retval None
*/
void FLASH_ProgramHWord(uint32_t Addr, uint16_t *HWordBuffer, uint32_t Length)
{
uint32_t i;
/* Check parameters */
assert_parameters(IS_FLASH_ADRRHW(Addr));
/* Unlock flash */
FLASH->PASS = FLASH_PASS_KEY;
FLASH->PGADDR = Addr;
for (i=0; i<Length; i++)
{
if (((Addr + 2*i)&0x3) == 0)
*((__IO uint16_t*)(&FLASH->PGDATA)) = *(HWordBuffer++);
else
*((__IO uint16_t*)(&FLASH->PGDATA ) + 1) = *(HWordBuffer++);
}
while (FLASH->STS != 1);
/* Lock flash */
FLASH->PASS = 0;
}
/**
* @brief FLASH byte progarm.
* @param Addr: program start address
ByteBuffer: byte's buffer pointer to write
Length: The length of ByteBuffer
* @retval None
*/
void FLASH_ProgramByte(uint32_t Addr, uint8_t *ByteBuffer, uint32_t Length)
{
uint32_t i;
/* Check parameters */
assert_parameters(IS_FLASH_ADDRESS(Addr));
/* Unlock flash */
FLASH->PASS = FLASH_PASS_KEY;
FLASH->PGADDR = Addr;
for (i=0; i<Length; i++)
{
if (((Addr + i)&0x3) == 0)
*((__IO uint8_t*)(&FLASH->PGDATA)) = *(ByteBuffer++);
else if (((Addr + i)&0x3) == 1)
*((__IO uint8_t*)(&FLASH->PGDATA) + 1) = *(ByteBuffer++);
else if (((Addr + i)&0x3) == 2)
*((__IO uint8_t*)(&FLASH->PGDATA) + 2) = *(ByteBuffer++);
else
*((__IO uint8_t*)(&FLASH->PGDATA) + 3) = *(ByteBuffer++);
}
while (FLASH->STS != 1);
/* Lock flash */
FLASH->PASS = 0;
}
/**
* @brief Get Write status.
* @param None.
* @retval FLASH_WSTA_BUSY
FLASH_WSTA_FINISH
*/
uint32_t FLASH_GetWriteStatus(void)
{
if (FLASH->STS == 1)
{
return FLASH_WSTA_FINISH;
}
else
{
return FLASH_WSTA_BUSY;
}
}
/**
* @brief Set checksum range.
* @param AddrStart: checksum start address
AddrEnd: checksum end address
* @retval None
*/
void FLASH_SetCheckSumRange(uint32_t AddrStart, uint32_t AddrEnd)
{
/* Check parameters */
assert_parameters(IS_FLASH_CHECKSUMADDR(AddrStart,AddrEnd));
FLASH->CSSADDR = AddrStart;
FLASH->CSEADDR = AddrEnd;
}
/**
* @brief Set checksum compare value.
* @param Checksum: checksum compare value
* @retval None
*/
void FLASH_SetCheckSumCompValue(uint32_t Checksum)
{
FLASH->CSCVALUE = Checksum;
}
/**
* @brief Get FLASH checksum value.
* @param None
* @retval Checksum
*/
uint32_t FLASH_GetCheckSum(void)
{
return FLASH->CSVALUE;
}
/**
* @brief Get FLASH interrupt status.
* @param IntMask:
FLASH_INT_CS
* @retval 1: interrupt status set
0: interrupt status reset
*/
uint8_t FLASH_GetINTStatus(uint32_t IntMask)
{
/* Check parameters */
assert_parameters(IS_FLASH_INT(IntMask));
if (FLASH->INT&FLASH_INT_CSERR)
{
return 1;
}
else
{
return 0;
}
}
/**
* @brief Clear FLASH interrupt status.
* @param IntMask:
FLASH_INT_CS
* @retval None
*/
void FLASH_ClearINTStatus(uint32_t IntMask)
{
/* Check parameters */
assert_parameters(IS_FLASH_INT(IntMask));
if (IntMask == FLASH_INT_CS)
{
FLASH->INT = FLASH_INT_CSERR;
}
}
/*********************************** END OF FILE ******************************/
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